Can you post or e-mail me the raw file?

You see this problem in lots of cameras. I think it is called purple fringing or sth like that. I doubt that it is an optical thing (because you don't see it in film) so it must be something with CCD sensors having trouble distinguishing between full light and no light and they end up with blue!

I guess one thing you could do with photoshop is to extract the edges on that side of the photo and remove the blue channel. I have a feeling that better cameras don't have this problem that much. Anyway have a look at the first google results:

http://www.google.ca/search?&q=purple+fringing

You're on the right track with selective color. I pulled off a copy of your jpeg and fooled with it a bit (hope that's okay, I trashed it when I was done).

I use selective color alot (Image>Adjustments>Selective Color). I simply selected whites from the drop down menu, made sure the radio button at the bottom was on absolute, and pulled the magenta slider to the negative side. The result is a cyan fringe, which at least is believable.

One problem is that this affects the whites in the cars, etc... Easy fix there though. Just go to quick mask mode and make a selection of the areas you want to affect with a fuzzy brush.

Hope this is helpful...

Kaveh, that's interesting... I don't know how to extract the edges using Photoshop, but I'm sure I can poke around for it, now that I know that there's a feature that does that.

And thank you too, »»regularjoe««. I don't mind you pulling the file. I actually tried to upload my RAW file here so people could play with it if they wanted, but I guess it was too big. (I sent it to JR, so we'll see if he does anything interesting with it.)

Anyway, it didn't occur to me to change the whites. I'll have to try that. (Or, if you still have the file you worked on, please feel free to post it in the comments or send it to me.) I'm curious to see how it ends up looking.

Thanks for the suggestions!

I walk by this spot almost every day!

I tried a technique I saw in a forum and it worked very well.

1. Duplicate the background layer (Ctr/Command-J).
2. Go to Filter > Blur > Gaussian Blur and use a value of 180.
3. Click the eye icon next to the duplicate layer in the layers palette to hide it for now.
4. Go to Select > Color Range. Move the cursor over the image window (it turns into an eyedropper) and sample the color in the blue fringe. You may need to zoom in, so just press Ctr/Command-Spacebar to temporarily switch to the zoom tool and drag over the area you want to magnify. It also helps if the eye dropper is set to sample a 3x3 pixel area (You can do this before by selecting the eyedropper in the toolbar and changing the sample size in the options bar at the top, then it will use that size in all the dialogs). Adjust the fuzziness slider to 90 in the Color Range dialog.
5. Go to Select > Modify > Expand selection and enter 3 pixels.
6. Go to Select > Feather > and enter 2 pixels.
7. Click the eye icon next to the duplicate layer to make the layer visible and click the layer in the layers palette to make it active.
8. Change the blending mode to Color (this preserves the underlying detail or luminance values and changes only the color).
9. Click the Add Layer Mask at the bottom of the layers palette (since you have a selection in place, the mask will hide everything except the selection).
10. There will still be some blue fringing, so make sure the layer mask is selected (click on it in the layers palette so that it has a border around it), select the brush tool (press B), press D to set the foreground color to white, set the brush opacity to 100% in the options bar at the top, and paint over the blue fringing to clean up any stray color.

When I tried it it eliminated all the blue/purple fringing so I was really impressed.

I bought a Kodak. ;)

Wow... I stumbled upon this blog looking for ways to deal with a blue fringe. I used the method provided by Alex Photographic and I must say it worked wonders! Thank you!